Zoning, building permits and septic rules in Mazon Township, Illinois

Mazon Township’s own rules

• Building permitRequired

  Buildings and regulated appurtenances located in the portion of Mazon Township outside municipal limits.

  • The county provision applies only to property located outside the limits of municipalities of Grundy County.
  • The building or appurtenance must be regulated by Title 6.
  • Plans or proposed work must conform to Title 6 and other pertinent laws and ordinances before issuance.

  “It is hereby required that a permit be obtained in advance and all other requirements of this title be complied with whenever a building or structure, or parts or appurtenances thereof, such as plumbing installation and electrical installation, located outside the limits of municipalities of this county and regulated by this title is erected, installed, altered, converted, remodeled, structurally repaired, moved or changed.”

• Septic inspectionRequired

  Private sewage disposal system installation in Mazon Township when handled by the Grundy County Health Department.

  • The Health Department guide directs applicants to schedule an inspection 48 hours before installation.
  • The guide's instruction also covers well drilling.

  advance notice: >= 48 hours (Prior to PSD-system installation or well drill.)

  “Contact the Health Department to schedule an appointment 48 hours prior to the PSD system installation/ well drill in order to schedule an inspection.”

• Off-grid sanitationLimited

  Private sewage disposal serving dwellings in Mazon Township.

  • Every occupied dwelling must have a sewage system approved by the county health department.
  • A public/community system or an approved cluster system may replace an individual system.
  • On-site systems require county health-department permitting where county jurisdiction applies.

  “Every building occupied as a dwelling shall have a sewage system as provided herein, approved by the county health department.”

• Mandatory utility hookupConditional

  New development inside Mazon Township that is subject to the county Unified Development Code.

  • A public or community sewage system may be required by the county.
  • If a sanitary sewer system is unavailable and a new centralized system is not warranted or feasible, facilities are to be served by individual or cluster on-site systems.
  • The source does not establish a universal connection-distance rule for every new home in Mazon Township.

  “If a sanitary sewer system is not available and a new community sewage system with centralized treatment is not warranted or feasible, residential housing units and nonresidential facilities shall be served by individual or cluster on site sewage disposal systems.”

• Permit feesVariable (with conditions)

  County building permits for the portion of Mazon Township outside municipal limits.

  • Payment is due with the application.
  • The amount is set by a fee schedule adopted by Grundy County Board resolution.
  • The opened section does not state the dollar amounts.

  “Payment of the fees, as required by the schedule of fees adopted by resolution by the Grundy County board, shall be made with the application.”

• Permit processPublished (with conditions)

  County building permits for the portion of Mazon Township outside municipal limits.

  • The signed application must be on the Building Officer's form.
  • The application must include the listed location drawing and, where applicable, Health Department well and septic permits.
  • Plans may be waived for minor nonstructural alterations and qualifying residential accessory buildings no larger than 700 square feet.
  • The Building Officer examines the application and plans within 10 days.

  application examination: <= 10 days (Examination by or under direction of Building Officer.) · residential accessory-building plan-waiver threshold: <= 700 square feet (Only if sufficiently described in application and not involving structural changes.)

  “Examination of the application and plans shall be made within ten (10) days by or under the direction of the building officer.”

Rules another office applies inside Mazon Township

Mazon Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

• Who permits septicMixed (with conditions)

  Private sewage disposal systems serving land inside Mazon Township, subject to municipal-system availability and Illinois EPA jurisdiction.

  • Grundy County Health Department issues and administers local permits for systems within its jurisdiction.
  • Illinois EPA approval applies instead of county approval in some cases.
  • The Illinois Department of Public Health regulates installations covered by its private sewage program.

  “In some cases, permit approval of the Illinois EPA will be required in lieu of county approval. Systems that are regulated by the IEPA are not regulated by the county health department.”

• Septic permitRequired

  Construction or alteration of a private sewage disposal system inside Mazon Township, where county rather than Illinois EPA approval has jurisdiction.

  • A county health-department permit must be obtained before construction or alteration.
  • The installation, modification, or repair fee is doubled if work begins before the health-department permit.
  • Illinois EPA approval is required instead of county approval for systems regulated by Illinois EPA.

  “No private sewage disposal system shall be constructed or altered unless a permit shall first have been obtained from the county health department.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Mazon Township or Grundy County directly.

• Owner-builder exemption — Owner-built dwellings inside Mazon Township.
• Building code adopted — Land inside Mazon Township, Illinois.
• Inspections — General building construction inside Mazon Township.
• Certificate of occupancy — Structures inside Mazon Township.
• Local zoning — Land inside Mazon Township, Illinois.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.